Show:
Addition w/o Regrouping
Subtraction w/o Regrouping
Addition with Regrouping
Subtraction with Regrouping
Properties of Addition
100

1,052 + 2,345

3,397

100

945 - 804

141

100

7,337 + 672

8,009

100

4,387 - 3,359

1,028

100

5+0 = 5

Identity

200

152 + 102

254

200

820 - 420 

400

200

2,089 + 4,237

6,326

200

8,173 - 2,950

5,223

200

8+10 = 10+8

Commutative Property

300

833 + 104

937

300

309 - 103

206

300

9,197 + 9,960

19,157

300

9,532 - 8,278

1,254
300

560 + 0 = 560

Identity Property

400

2,547 + 3,432

4,979

400

268 - 141

127

400

6,846 + 9,352

16,198

400

9,400 - 8,647

753

400

(11+2) + 8 = 11 + (2+8) 

Associative Property

500

6,124 + 3,665

9,798

500

982 - 162

820

500

3,670 + 8,664

12,334

500

600-208

392

500

8 + (12+3) = 3 + (8+12)

Associative Property